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  • Title: [Chronic effect of prazosin and yohimbine on the renal epinephrine content of DOCA-sodium and SHR-hypertensive rats].
    Author: Torres A, Sáiz J, Sánchez A.
    Journal: Rev Esp Fisiol; 1987 Sep; 43(3):310-5. PubMed ID: 2892235.
    Abstract:
    The chronic effect of two alpha-adrenergic receptor blockers, prazosin and yohimbine, on the renal noradrenaline (NA) content was investigated in two models of hypertensive rats, the DOCA-salt and the spontaneously hypertensive rats (SHR). In DOCA-salt rats an inversal relation exists between the level of blood pressure and renal NA content in all groups studied, except those treated with yohimbine and prazosin plus yohimbine. In SHR rats a decreased renal NA content has been detected with respect to their normotensive Wistar-Kyoto (WKY) rat controls. The administration of prazosin and/or yohimbine did not alter the renal NA content of the SHR rats, while on the contrary these agents produced an elevation of these levels in kidneys from normotensive WKY rats. These results suggest that the alpha-selective blocker agents used, demonstrate a different effect on the renal NA content in the two models of hypertension studied.
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